fixed more errors

src/main/java/com/github/hydos/ginger/engine/api/Ginger.java

@@ -26,7 +26,7 @@ public class Ginger {
 	public void setup(MasterRenderer masterRenderer, Game game) {
 		gingerRegister = new GingerRegister();
 		gingerRegister.registerGame(game);
-		contrastFbo = new Fbo();
+		contrastFbo = new Fbo(new ContrastChanger());
 		this.masterRenderer = masterRenderer;
 		picker = new MousePicker(game.data.camera, masterRenderer.getProjectionMatrix(), null);
 		PostProcessing.init();

src/main/java/com/github/hydos/ginger/engine/fbo/FboCallbackHandler.java

@@ -3,9 +3,9 @@ package com.github.hydos.ginger.engine.fbo;
 public abstract class FboCallbackHandler
 {
 	
-	public abstract void render();
+	public abstract void render(int texture);
 	
 	public void resize() {}
-	public void cleanup() {}
+	public void cleanUp() {}
 	
 }

src/main/java/com/github/hydos/ginger/engine/postprocessing/ContrastChanger.java

@@ -14,6 +14,7 @@ public class ContrastChanger extends FboCallbackHandler{
 		renderer = new ImageRenderer();
 	}
 	
+	@Override
 	public void render(int texture) {
 		shader.start();
 		GL13.glActiveTexture(GL13.GL_TEXTURE0);
@@ -22,9 +23,9 @@ public class ContrastChanger extends FboCallbackHandler{
 		shader.stop();
 	}
 	
+	@Override
 	public void cleanUp() {
 		renderer.cleanUp();
 		shader.cleanUp();
 	}
-	
 }